/*******************************************************************************
* Copyright (c) 1998, 2009 Oracle. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* Oracle - initial API and implementation from Oracle TopLink
******************************************************************************/
package org.eclipse.persistence.internal.oxm;
import org.eclipse.persistence.internal.sessions.AbstractSession;
import org.eclipse.persistence.oxm.NamespaceResolver;
import org.eclipse.persistence.oxm.XMLField;
import org.eclipse.persistence.oxm.mappings.XMLChoiceObjectMapping;
import org.eclipse.persistence.oxm.mappings.XMLDirectMapping;
import org.eclipse.persistence.oxm.mappings.XMLCompositeObjectMapping;
import org.eclipse.persistence.oxm.mappings.XMLMapping;
import org.eclipse.persistence.oxm.record.MarshalRecord;
import org.eclipse.persistence.oxm.record.UnmarshalRecord;
import org.eclipse.persistence.sessions.Session;
import org.eclipse.persistence.oxm.XMLRoot;
import org.xml.sax.Attributes;
/**
* INTERNAL:
* <p><b>Purpose</b>: This is how the XML Choice Collection Mapping is
* handled when used with the TreeObjectBuilder.</p>
* @author mmacivor
*/
public class XMLChoiceObjectMappingNodeValue extends NodeValue implements NullCapableValue {
private NodeValue choiceElementNodeValue;
private XMLChoiceObjectMapping xmlChoiceMapping;
//The first node value of the choice will be registered as a null capable value. If any
//of the choice elements get hit, this needs to be removed as a null value.
private XMLChoiceObjectMappingNodeValue nullCapableNodeValue;
private XMLField xmlField;
public XMLChoiceObjectMappingNodeValue(XMLChoiceObjectMapping mapping, XMLField xmlField) {
this.xmlChoiceMapping = mapping;
this.xmlField = xmlField;
initializeNodeValue();
}
public boolean isOwningNode(XPathFragment xPathFragment) {
return choiceElementNodeValue.isOwningNode(xPathFragment);
}
public void initializeNodeValue() {
XMLMapping xmlMapping = xmlChoiceMapping.getChoiceElementMappings().get(xmlField);
if(xmlMapping instanceof XMLDirectMapping) {
choiceElementNodeValue = new XMLDirectMappingNodeValue((XMLDirectMapping)xmlMapping);
} else {
choiceElementNodeValue = new XMLCompositeObjectMappingNodeValue((XMLCompositeObjectMapping)xmlMapping);
}
}
public void setNullCapableNodeValue(XMLChoiceObjectMappingNodeValue nodeValue) {
this.nullCapableNodeValue = nodeValue;
}
public void setNullValue(Object object, Session session) {
xmlChoiceMapping.setAttributeValueInObject(object, null);
}
public boolean marshal(XPathFragment xPathFragment, MarshalRecord marshalRecord, Object object, AbstractSession session, NamespaceResolver namespaceResolver) {
Object value = xmlChoiceMapping.getAttributeValueFromObject(object);
if(value instanceof XMLRoot) {
XMLRoot root = (XMLRoot)value;
XPathFragment fragment = this.xmlField.getXPathFragment();
while(fragment != null && !fragment.nameIsText) {
if(fragment.getNextFragment() == null || fragment.getHasText()) {
if(fragment.getLocalName().equals(root.getLocalName())) {
String fragUri = fragment.getNamespaceURI();
String namespaceUri = root.getNamespaceURI();
if((namespaceUri == null && fragUri == null) || (namespaceUri != null && fragUri != null && namespaceUri.equals(fragUri))) {
return this.choiceElementNodeValue.marshal(xPathFragment, marshalRecord, object, session, namespaceResolver);
}
}
}
fragment = fragment.getNextFragment();
}
} else {
if(value != null && xmlChoiceMapping.getClassToFieldMappings().get(value.getClass()) == this.xmlField) {
return this.choiceElementNodeValue.marshal(xPathFragment, marshalRecord, object, session, namespaceResolver);
}
}
return false;
}
public void endElement(XPathFragment xPathFragment, UnmarshalRecord unmarshalRecord) {
unmarshalRecord.removeNullCapableValue(this.nullCapableNodeValue);
this.choiceElementNodeValue.endElement(xPathFragment, unmarshalRecord);
}
public boolean startElement(XPathFragment xPathFragment, UnmarshalRecord unmarshalRecord, Attributes atts) {
unmarshalRecord.removeNullCapableValue(this.nullCapableNodeValue);
return this.choiceElementNodeValue.startElement(xPathFragment, unmarshalRecord, atts);
}
public void setXPathNode(XPathNode xPathNode) {
super.setXPathNode(xPathNode);
this.choiceElementNodeValue.setXPathNode(xPathNode);
}
}